add 2fa tutorial

Author: x4nth055

Diff for: README.md

@@ -59,6 +59,7 @@ This is a repository of all the tutorials of [The Python Code](https://www.thepy
     - [How to Generate Fake User Data in Python](https://thepythoncode.com/article/generate-fake-user-data-in-python). ([code](ethical-hacking/fake-user-data-generator))
     - [Bluetooth Device Scanning in Python](https://thepythoncode.com/article/build-a-bluetooth-scanner-in-python). ([code](ethical-hacking/bluetooth-scanner))
     - [How to Create A Fork Bomb in Python](https://thepythoncode.com/article/make-a-fork-bomb-in-python). ([code](ethical-hacking/fork-bomb))
+    - [How to Implement 2FA in Python](https://thepythoncode.com/article/implement-2fa-in-python). ([code](ethical-hacking/implement-2fa))
 
 - ### [Machine Learning](https://www.thepythoncode.com/topic/machine-learning)
     - ### [Natural Language Processing](https://www.thepythoncode.com/topic/nlp)

Diff for: ethical-hacking/implement-2fa/README.md

@@ -0,0 +1 @@
+# [How to Implement 2FA in Python](https://thepythoncode.com/article/implement-2fa-in-python)

Diff for: ethical-hacking/implement-2fa/hotp.py

@@ -0,0 +1,19 @@
+import pyotp
+
+# Set the key. A variable this time
+key = 'Muhammad'
+# Make a HMAC-based OTP
+hotp = pyotp.HOTP(key)
+
+# Print results
+print(hotp.at(0))
+print(hotp.at(1))
+print(hotp.at(2))
+print(hotp.at(3))
+
+# Set counter
+counter = 0
+for otp in range(4):
+    print(hotp.verify(input("Enter Code: "), counter))
+    counter += 1
+

Diff for: ethical-hacking/implement-2fa/otp_qrcode_and_key.py

@@ -0,0 +1,27 @@
+# Program 1: Generate and Save TOTP Key and QR Code
+import pyotp
+import qrcode
+
+
+def generate_otp_key():
+    # Generate a random key for TOTP authentication.
+    return pyotp.random_base32()
+
+
+def generate_qr_code(key, account_name, issuer_name):
+    # Generate a QR code for TOTP authentication.
+    uri = pyotp.totp.TOTP(key).provisioning_uri(name=account_name, issuer_name=issuer_name)
+    img = qrcode.make(uri)
+    img.save('totp_qr.png')
+    print("QR Code generated and saved as 'totp_qr.png'.")
+
+
+# Main code.
+# Generate user key.
+user_key = generate_otp_key()
+print("Your Two-Factor Authentication Key:", user_key)
+# Save key to a file for reference purposes
+with open('2fa.txt', 'w') as f:
+    f.write(user_key)
+# Generate QR Code.
+generate_qr_code(user_key, 'Muhammad', 'CodingFleet.com')

Diff for: ethical-hacking/implement-2fa/otp_verification.py

@@ -0,0 +1,19 @@
+# Program 2: Verify TOTP Code with Google Authenticator
+import pyotp
+
+
+def simulate_authentication(key):
+    # Simulate the process of authenticating with a TOTP code.
+    totp = pyotp.TOTP(key)
+    print("Enter the code from your Google Authenticator app to complete authentication.")
+    user_input = input("Enter Code: ")
+    if totp.verify(user_input):
+        print("Authentication successful!")
+    else:
+        print("Authentication failed. Please try again with the right key.")
+
+
+# Main Code
+# The key should be the same one generated and used to create the QR code in Program 1
+user_key = open("2fa.txt").read()  # Reading the key from the file generated in Program 1 (otp_qrcode_and_key.py)
+simulate_authentication(user_key)

Diff for: ethical-hacking/implement-2fa/requirements.txt

@@ -0,0 +1,2 @@
+pyotp
+qrcode

Diff for: ethical-hacking/implement-2fa/totp.py

@@ -0,0 +1,14 @@
+import pyotp
+
+# Generate a random key. You can also set to a variable e.g key = "CodingFleet"
+key = pyotp.random_base32()
+# Make Time based OTPs from the key.
+totp = pyotp.TOTP(key)
+
+# Print current key.
+print(totp.now())
+
+# Enter OTP for verification
+input_code = input("Enter your OTP:")
+# Verify OTP
+print(totp.verify(input_code))